Serotonin
n. 血清素\\n[化] 5-羟色胺
🗣️ 情景例句
I've been invited to give a talk at the conference.
我已受邀在大会上发言。
How much is it?
多少钱？
But mine are better than yours. Look! Yours are green, and quite small.
但我的比你的好。瞧！你的是青的，而且很小。